Apple Acquires Low-Power Wireless Chip Developer Passif Semiconductor - MacRumors
Skip to Content

Apple Acquires Low-Power Wireless Chip Developer Passif Semiconductor

Apple has purchased Silicon Valley-based wireless chip developer Passif Semiconductor, reports technology writer Jessica Lessin. The company, which Apple has reportedly been after for several years, specializes in low-power communication chips that could be used to improve battery life in wearable devices such as Apple’s rumored iWatch.

bluetooth

Passif develops communication chips that use very little power. Its technology, which includes a radio that works with a low-energy version of Bluetooth called Bluetooth LE, is promising for health-monitoring and fitness devices that need extra-long battery life. (Apple, of course, is working on one of those.)

Apple has confirmed the acquisition, with Apple spokeswoman Amy Besette giving AllThingsD the following statement: "Apple buys smaller technology companies from time to time, and we generally do not discuss our purpose or plans."

According to rumors, battery life is one area where Apple has struggled in its iWatch development. A report in March suggested that the batteries in Apple’s iWatch prototypes were only lasting a couple of days, with the company targeting at least 4–5 days of battery life.

After trademarking the iWatch name in a number of countries, Apple has been pouring its resources into the smart watch in recent months. The company hired a number of new employees to join the iWatch team, including health sensor experts, as the iWatch is said to focus on health related applications and biosensors.

Passif's low-power chip technologies could also be used in other Apple products going forward, improving battery life across the board. In addition to Passif, Apple has acquired a number of other small companies in recent months, including Locationary and HopStop.

Popular Stories

iOS 26

iOS 26.4 Adds Two New Features to CarPlay

Tuesday March 24, 2026 1:55 pm PDT by
iOS 26.4 was released today, and it includes a couple of new features for CarPlay: an Ambient Music widget and support for voice-based chatbot apps. To update your iPhone 11 or newer to iOS 26.4, open the Settings app and tap on General → Software Update. CarPlay will automatically offer the new features so long as the iPhone connected to your vehicle is running iOS 26.4 or later....
Apple Business hero

Apple Unveils 'Apple Business' All-in-One Platform

Tuesday March 24, 2026 8:53 am PDT by
Apple today announced Apple Business, a new all-in-one platform that unifies device management, productivity tools, and customer outreach features. The service is designed to be a consolidated replacement for several of Apple's existing business-focused offerings, including Apple Business Essentials, Apple Business Manager, and Apple Business Connect. It provides organizations with a single...
AirPods Pro Firmware Feature

Apple Releases New Firmware for AirPods Pro 3, AirPods Pro 2 and AirPods 4

Tuesday March 24, 2026 12:31 pm PDT by
Apple today released new firmware for the AirPods Pro 2, AirPods Pro 3, and the AirPods 4. The firmware has a version number of 8B39, up from 8B34 on the AirPods Pro 3, 8B28 on the AirPods Pro 2, and 8B21 on the AirPods 4. There is no word on what's included in the firmware, but Apple has a support document with limited notes. Most updates are limited to bug fixes and performance...

Top Rated Comments

165 months ago
As excited as I am for this new iProduct, I don't know if I could ever justify letting go of my ******, banged up, deteriorating, orange, plastic watch that I've had for half of my life.


Simple, just wear the iWatch on your other wrist. ;)
Score: 5 Votes (Like | Disagree)
165 months ago
Apple should incorporate some small solar cells embedded in the strap to charge the iWatch's battery as much as possible. While solar may not provide 100% of the necessary energy for never having to plug in your iWatch, it could mean more time in between charges.

Heck, offer the straps in colors and make it a stronger MagSafe type of deal, and you've got a hot 1st party accessory.
Score: 4 Votes (Like | Disagree)
Klae17 Avatar
165 months ago
Love to see a kinetic battery in the watch. That would motivate me to wear it and actually go to the gym.
Score: 4 Votes (Like | Disagree)
12vElectronics Avatar
165 months ago
Am I the only one who has the 'who cares' mentality about this whole iWatch thing. I'm usually excited about anything Apple releases but could care less about this..
Score: 3 Votes (Like | Disagree)
165 months ago
I think it may be used as an NFC alternative
Score: 2 Votes (Like | Disagree)
AngerDanger Avatar
165 months ago
As excited as I am for this new iProduct, I don't know if I could ever justify letting go of my ******, banged up, deteriorating, orange, plastic watch that I've had for half of my life.

Score: 2 Votes (Like | Disagree)